Combined supply and regulating valve for gas



(No Model.)

H. STEWART.

COMBINED SUPPLY AND REGULATING VALVE FOR GAS.

No. 366,351. Patented July 12,1887.

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NITED STATES PATENT 'Frica.

HOMER STEWART, OF BEAVER FALLS, PENNSYLVANIA, ASSIGNOR OF THREE-FOURTHSTO MARY ELIZABETH FREDERICK, OF EAST LIVER- POOL, AND SAMUEL-M.LAWVRENOE, OF SALEM, OHIO.

COMBINED SUPPLY AND REGULATING VALVE FOR GAS.

SPECIFICATION forming part of Letters Patent No. 366,351,-dated July 12,1887.

Application filed May 9, 1887. Serial No. 237,576. (No model.)

To a/TZ whom it may concern/.-

Be it known that I, HOMER STEWART, a citizen of the United States,residing at Beaver Falls, in the county of Beaver and State ofPennsylvania, have invented certain new and useful Improvements inCombined Supply and Regulating Valves for Gas; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to means for automatically regulating the flow andcontrolling the supply of gas or other fluid under pressure. While ithas especial reference to natural gas, it is not limited thereto in itsuse, but may be applied to fluids generally-which are used underpressure.

It is well known that natural gas flowing from wells is subject to greatvariations in pressure, and that one of the principal annoyancesconnected with its use for mechanical and household or domestic purposesis that under the changes or fluctuations of pressure the burners arefrequently robbed of their supply of gas and the flame extinguished, andwhen the gas again commences to flow the building becomes filled with ahighlyinflammable fluid, which will ignite and explode the instant aflame is brought into contact with it.

By my invention a combined pressure-regulating and stop-off valve isprovided, which will automatically control the pressure and the quantityof gas to the pipe leading to the place of consumption as long as thegas is flowing under sufflcientpressure to supply the burners, and whenthe pressure falls below said point the pressure-regulating valve willclose and the supply-valve open to throw the pressure of the gas uponthe back of said regulatingvalve as soon as the gas again commences toflow, and firmly hold the valve to its seat until it is opened bypositive means.

The invention will be hereinafter described, and particularly pointedout in the claims.

In the accompanying drawing,which forms a part of this specification,the figure represents a side elevation of my device,partly in section,and in which- A represents the supply-pipe leading from the main, (notshown,) and B the distributingpipe leading to any suitable place ofconsumption. The supply'pipe is provided with a valve, 0, of anywell-known construction, and communicates with the ease or body of apressure-regulating and stop-oft valve, D, above the plane of the valveE, (when resting upon its seat F.) The valve E fills or nearly fills thebore of the valve case, and to the inner side of the valve is attached apacking, G, of any suitable material, to effect a light joint betweenthe valve and its seat. The stem It extends through one end of thevalve-ease, is packed in a stuffingbox, I, to prevent leakage of gas,and is provided with an elongated slot, K, at its outer end, throughwhich projects a lever, L, provided with a handle, M. The opposite endof the lever is attached to the stem N of the valve 0, and is supportedin a bracket, 0, which forms a fulcrum for said lever. The lever L isgraduated between the fulcrum and the valve-stem H, as shown at P, andis provided with a weight, Q, for regulating the degree of the pressureof the gas flowing to the burners.

To relieve the upper side of the valve E of pressure of gas entrappedbetween it and the end of the valve-case, and prevent the compression ofsaid gas to resist its further ascent under increased pressure from themain, :1 peteock, R, isinserted in the end of the valve-ease.

The operation is as follows: The pressure under which it is desired toburn the gas having been determined upon, the weight Q is properly setand the regulating-valve E raised positively above the plane of theinlet-port S by means of the lever L, and the supply-valve Oproportionally closed, the petcock R is opened, and the gas above thevalve allowed to escape. The pressure of the flowing gas, operating uponthe under side of the valve E, will now hold it in said position as longas the gas continues to flow at the predetermined pressure. Should thepressure increase, the valve E will rise higher, and, by means of thelever L, correspondingly depress the valvestem N and cut off the supplyfrom the main. Should the pressure fall, the valve E will dc scend andin like manner reverse the action upon the lever L, opening the valve 0and in IOC creasing the supply to the valve case D. As long as the gasflows at the predetermined pressure, the valve E will be supported bythe gas; but should-the pressure fall below that point, by fluctuationsof the gas in the well,or by the gas being cut offin the main, the valveE will descend to its seat,while the valve 0 will be opened to its fullextent, and the gas, again flowing into the case D, will hold the valveE to its seat firmly until opened positively.

Having thus fully described my invention, what'I claim is- 1. Apressure-regulating valve controlling a distributing-pipe, incombination with a valve in a supply-pipe and suitable connectionsbetween said valves, substantially as described.

2. A supply-pipe and a distributing-pipe, in combination with a valve inthe supply-pipe, a regulating-valve between the supply-pipe and-adistributing-pipe, and a lever connecting said valves, substantially asdescribed. 7

3. A regulating-valve having a valve-seat below the plane oftheinlet-orifice and a valve of about the same diameter as the bore of thevalve-case, in combination with a petcock in tially as. described.

In testimony whereof I affix my signature in a presence of twowitnesses.

HOMER. STEWART.

Witnesses:

- T. GHESNUT,

G. L. EBERHART.

